MP3 has multiple trainers, one for Steam and one for retail/no-cd. Make sure you are using the correct one. You can try them both. You can also try using the no-cd fix with the retail trainer.

Max Payne I could not test because a new update came out. Unfortunately, only the Steam version was made new, the retail / No-CD version is still the old one. And the Steam-Version crashed :-(

Are you trying to run the OLD max payne? If so, always check on the bottom of the game page for codes that sometimes work better than out-dated trainers.

Max Payne(1)Activate CheatsTo get access to the game console, you need to start maxpayne.exe with the command line parameter "-developer". Once you have the game running in developer mode, you get access to the game console with [F12].